Pool Mate 1-Quart, 2-Pack Premium Pool Algaecide 50, Made in USA

I have used these for years now. The saltwater pool chemicals align very well with its functionality. I will continue to buy the product for maintenance against algae in my pool… Does not seem to affect negatively any of the pool components, including my pool heater.

Good algaecide and phosphate remover at a better price. Kills algae and clarifiers too

Bought my house a couple years ago, and it had a great pool built about 20 years ago. The coping, as in all older pools, gets pits and crevices and these small areas, mostly on the pool floor, get stubborn black algae. I learned to keep track of my own pool. Though the rest of the pool looks great, there was stubborn black dots around on the floor and on the walls that were just impossible to make go away. My pool is 21k gallons so I poured in the whole bottle of Algeacide 50. I tried to pour around the edges where the greatest concentrations of black algae was on walls and seating areas. Pool was already PH, Alkalinity and Chlorine balanced so after pouring in this treatment I let the filter run. (I have free electricity on the weekends so that's when I initiated this process). You will not notice anything for a day or even two but you will be pleasantly surprised after 5 days to a week. I initially took to the pool with my metal pool brush after pouring in the entire bottle, and would hit it again every other day. My pool is so clean now, and so free of black algae, that I'm almost in shock (pun intended). I have several fountains and spill into the pool from the filter. These created some mild, localized foam for a week or so but it is a small aesthetic price to pay for the amazing effectiveness of this product in completely ridding your pool of all stubborn algea!

No copper in this algaecide however there is a slight odor post application and a little foaming. The product attacks algae which turns grey and sinks to the bottom of the pool requiring a vacuum. Would advise to clean your filter post vacuuming.

I get these for half the price of what my local pool store wants to charge and it works just as well.

Works great

I had heavily shocked my pool to remove mustard algae. This was cleared but as expected spots of black algae remained, I added the full bottle 32 fluid oz of Black Algaecide to my 20,000gal pool per instructions. It is 5 days since the application, and it has had no effect whatsoever on the black spot despite repeated brushing. In my opinion this product was a complete waste of money, and I cannot recommend it

I purchase this algaecide each year for my pool. It does a great job at keeping the algae away in warmer weather. Very easy to use.